Hello all,
How can i emulate sizeof()
only for integers?

Eugeny Myunster wrote:

You can look up to sizeof, follow its example in your comings
and goings and doings, seek always to be true to its teachings, and
strive unceasingly in all ways to model your own behavior after that
of sizeof. In any dilemma, ask yourself "What would sizeof do?"
Don't accept easy, cop-out answers (sizeof would not do so, after
all), but spur yourself to deeper and more honest self-examination.
Feed the hungry, heal the sick, give generously to the poor -- in
short[*], emulate sizeof.

[*] A kind of integer, as specified.

Eugeny Myunster wrote:

I'd really love to know which instructors keep giving this assignment.

Why do you want to "emulate sizeof", when sizeof exists just for this
purpose?

How about:

#define MySizeof(x) sizeof(x)

Now you can "emulate sizeof" by using "MySizeof(int)", for example.

Kenneth Brody spamcop.net> writes:

Except that the macro, unlike the sizeof operator, requires a
parenthesized argument; you can't write "MySizeof 42".

On Apr 30, 9:56 am, Eugeny Myunster wrote:

Of course, it is lunacy to use something else when you want a size,
since the sizeof operator is perfect for that task.

That having been said, you can make an array of 2 objects, and get an
unsigned char pointer to the first and second object and subtract the
pointer difference to find the size.

E.g.

#define StupidEvilTwistedSizeof(type,ans) { \
type a[2]; \
unsigned char *start = (unsigned char *)&a[0]; \
unsigned char *end = (unsigned char *)&a[1]; \
*ans=end-start;}

#include
#include

On Apr 30, 3:06 pm, user923005 connx.com> wrote:

On Apr 30, 3:23 pm, user923005 connx.com> wrote:

On Wed, 30 Apr 2008 15:06:16 -0700 (PDT), user923005
connx.com> wrote:

Concur.

You don't even need an array of two: just a single object,
and use the address-one-past. You can't (safely, portably)
_dereference_ that address, but you can compute it.

In article 4ax.com>,
David Thompson verizon.net> wrote:

gazelle@xmission.xmission.com (Kenny McCormack) writes: